I'll probably have one or two spares, but I'm still waiting for the delivery to come in. How much do you need? I can ask for a small batch of switches, they are stock items. Also waiting for the bill of the transport costs. Is there need for more of these switches at this forum?

Thanks! Just found out that conrad still sells 2n3819 think i'll get some from them, farnell is my ususal supplier.

Usually Dick Best is way cheaper here in NL. Just a suggestion! Or you could get one from me, if you've time somewhere on a weekly evening... (as I see you're from Utrecht too! ) _________________Weblog!

I've managed to get almost all the parts. Got a V2.3 board and a V2.1 pic.

I'm a bit confused about applying which parts to get things working.
first i used BOM 2.1 and found out there was a 2.3 BOM, so i added the parts Q6, R13, R16. R19 and R21 included in the 2.3 BOM version. Then I read something about omitting these parts when using the 4066N IC as described in the V2.1 construction manual.

Right now i've build the sequencer according to the v21 construction notes 191.pdf manual, which includes 4066N. Do i need to remove Q6, R13, R16. R19 and R21 again? They are clearly visible on the picture included in the v21 construction manual, in contrast to the writing omitting them in the build.

I just happen to have finally finished my pair of M-185's in the last 2 weeks.

For the 2.1 firmware (ignore the board revision, it's not important to this part of the build), you don't need the Stage CV connection, so Q6, R13, R16. R19 and R21 are not needed. I actually desoldered mine for my 2.1 build, and used one of the transistor leg connections for one of the connections needed by the 4066 to the PIC (rather than soldering directly to the PIC's pin under the PCB).

I've attached a photo of my V2.1 build, you should be able to see where I removed the components in the bottom right corner of the main PCB and took an orange wire to the 4066.

I also built a wiring helper board for the 4066 and all of the switch resistors - then wired to the switches with Ribbon cable.

Hope this helps and feel free to shout out if you have any more issues, as this build is still quite fresh in my memory.

Seeing as I've just commented on Bastian's question, I have no more excuses for not posting some more pictures of my two M-185 I finally finished this month.

This is a Version 2.1 unit using a panel from The Beast. I've probably had the panels for over 18 months, but it appears my New Years resolution is to finish a load of my modules this year, so these were prime candidates.

This is by far the most complex panel I've had to wire so far - over 200 connections on the panel alone. The switch wiring I was putting off worked out quite well when I found an old Verowire pen in one of my old component boxes. This is thin insulated wire held in something like a wire-wrap pen, you just wrap it around the connections a turn or two. The neat part is that you just solder through the wire's insulation, which also contains a flux for the joint. I only had one suspect connection across all 32 switches I wired using this method.

I made a little wiring helper board on matrix board, so that I didn't have to wire resistors directly onto some of the switches. The Version 2.1 firmware needs another IC adding anyway, so this could be located on the wiring helper as well.

I also made a hinged panel so that I could keep the wiring relatively short and used quite a bit of ribbon cabling to make things neater.

I've also got a Version 2.0 M-185 competed within a few days of this one, though this gave me a few more problems. This was diagnosed to 3 incorrect value resistors (should have been 4k7, installed 470R) and a broken track that was hiding under a resistor pad.

Time to get on with building some more panels so that I can carry on working through converting some of my completed PCB's to completed modules.

I just happen to have finally finished my pair of M-185's in the last 2 weeks.

For the 2.1 firmware (ignore the board revision, it's not important to this part of the build), you don't need the Stage CV connection, so Q6, R13, R16. R19 and R21 are not needed. I actually desoldered mine for my 2.1 build, and used one of the transistor leg connections for one of the connections needed by the 4066 to the PIC (rather than soldering directly to the PIC's pin under the PCB).

I've attached a photo of my V2.1 build, you should be able to see where I removed the components in the bottom right corner of the main PCB and took an orange wire to the 4066.

I also built a wiring helper board for the 4066 and all of the switch resistors - then wired to the switches with Ribbon cable.

Hope this helps and feel free to shout out if you have any more issues, as this build is still quite fresh in my memory.

Well, after a weekend soldering all the wires to the board and the switches,
got things working! Had some troubles with the diversion switch but replaced this and the sequencer works as it should....

The device really is fun to create loops with!

Still i've got some questions.

There is a lot of switching noise when I loop the gate out through my VCA.
When i play sawwaves you don't hear them, but when sequencing sine or triangle waves there is a lot of gate noise when chopping the notes in pieces with the VCA. Did anyone else experience this?
Any suggestions what I can do about this?

I fried my ADSR with patching the clock out /gate out back into my system. are those CV's to high to be able to do this? (did this with a Doepfer DIY synth set)

For the 2.1 version you omit a transistor and a couple
of resistors, have a look at the DOCs on the first
page of the thread.
Also 2.1 utilise a simple daughter board with a 4066
to control the programable portamento.

Bastian !!
Looks great, really nice layout, well done.

In other news . . .
I am slowly developing a version 3 !!
which hopefully will be available this year
Also a limited supply of switches should be
available.

Sorry ryk, what does it mean when you say a version 3 may be available later this year? I'd really like to build one of these sequencers . It's been some time since I have read all the pages of this thread. Will this include the PIC or is there some new method used now?

Sorry ryk, what does it mean when you say a version 3 may be available later this year? I'd really like to build one of these sequencers . It's been some time since I have read all the pages of this thread. Will this include the PIC or is there some new method used now?

Hello

There will be a new board and PIC with hopefully a new feature
and a bit simpler to build.
Also possibility of a software update for existing PICs
with a fun new split sequence feature . . .

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